Bandwidth estimation for ultra-high-speed lithium niobate modulators |
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Authors: | Haxha Shyqyri Rahman B M Azizur Grattan Kenneth T V |
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Affiliation: | School of Engineering and Mathematical Sciences, City University, Northampton Square, London EC1V 0HB, United Kingdom. |
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Abstract: | The effects of velocity matching, impedance matching, conductor loss, and dielectric loss on the optical bandwidth of an ultra-high-speed lithium niobate modulator are reported. It is shown that both dielectric loss and impedance matching play a key role for velocity-matched high-speed modulators with low conductor loss. The effects of etch depth, buffer thickness, electrode width, and thegap between the electrodes on device performance are also illustrated. |
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